Display with lighting device

ABSTRACT

The present invention discloses a display with a lighting device comprising a display body having a housing and a power supply panel. The lighting device mounted at the bottom of the housing comprises a transparent base having a receiving cavity and a light source body disposed within the receiving cavity and powered by a power supply. Mounted at the bottom of the display body, the lighting device has the light downwards to illuminate the whole keyboard area of the medical diagnostic device such that the structure is tight without occupying extra space, thereby no inconvenience occurs during doctors&#39; operation. Moreover, the entire lighting device is designed in a modularized manner, and therefore it is convenient for renewal and maintenance.

STATEMENT OF RELATED APPLICATION

The present application claims the priority of the Chinese PatentApplication No. CN200720119538.X, filed on Apr. 12, 2007, entitled“Display with Lighting Device”, the disclosure of which is incorporatedherein by reference.

FIELD OF THE INVENTION

This invention relates to the field of medical diagnostic apparatuses,and more particularly to a display used in a medical diagnosticapparatus.

BACKGROUND OF THE INVENTION

In order that doctors can read and operate diagnostic apparatuses (suchas an ultrasonic diagnostic apparatus) conveniently in a darkroom, alighting device is required to illuminate the whole keyboard area of thediagnostic apparatus. The lighting devices of the prior art fall intotwo types: 1) the table lamp available in the market may be directlyused as an auxiliary lighting source; 2) a lighting lamp similar to atable lamp may be arranged on one side of the keyboard, the lightinglamp having a supporting bar such that the lighting lamp illuminates thekeyboard at a certain height. However, both the two types are deficientin loose structure and extra-occupied space, thereby interfering withnormal operations by doctors.

SUMMARY OF THE INVENTION

An objective of the present invention is to provide a display in tightstructure without occupying extra space to overcome the deficiencies ofthe prior art.

According one aspect of the present invention, the technical solutionadopted in the present invention for solving the technical problem is toprovide a display with a lighting device comprising a display body and alighting device, wherein the display body has a housing and a powersupply panel, and the lighting device mounted at the bottom of thehousing consists of a base having a receiving cavity and a light sourcebody disposed within the receiving cavity and powered by a power supply.

The light source body is electrically connected to and powered by thepower supply panel of the display body.

The lighting device further comprises a lighting circuit board and acontrol switch fixed to the base, the lighting circuit board connectingthe light source body with the power supply panel via the controlswitch, the control switch having a first switch link connected to thelighting circuit board and a second switch link connected to the powersupply panel.

The base comprises a frame fixed to the bottom of the housing and alight-transparent lamp shade fixed below the frame, above the framebeing fixed the lighting circuit board, and the lamp shade and the frameenclosing to form the receiving cavity.

The lighting circuit board has a lamp holder on the side facing theframe, at the position of the frame corresponding to the lamp holder isdisposed with a first through hole through which the lamp holder extendsinto the receiving cavity, and the light source body used as a tube ismounted inside the lamp holder.

The lamp shade has a second through hole, in which the control switchmounted on the frame is exposed.

The frame has a switch fixing hole and the control switch has aresilient fastener, the resilient fastener being fastened into theswitch fixing hole.

Part of the wall of the receiving cavity is arc-shaped and reflective.

The housing of the display body comprises a front housing and a rearhousing, with a gap formed between the bottoms of the two housings andthe lighting device attached within the gap.

According another aspect of the present invention, there is provided adisplay with a lighting device comprising a display body having ahousing and a power supply panel, and a lighting device mounted on thebottom of the housing. The lighting device consists of: a base having areceiving cavity; a light source body disposed within the receivingcavity and powered by a power supply; a lighting circuit board and acontrol switch mounted on the base, the lighting circuit boardconnecting the light source body with the power supply panel via thecontrol switch, the control switch having a first switch link connectedto the lighting circuit board and a second switch link connected to thepower supply panel.

Preferably, the base comprises a frame and a light-transparent lampshade which enclose to form the receiving cavity, on the frame beingmounted the lighting circuit board and the lamp shade being connected tothe underside of the frame, the frame having a switch fixing hole intowhich, the resilient fastener of the control switch is fastened.

Further, the lighting circuit board has a lamp holder, and the lightsource body is an elongate tube or a LED spot light source mountedwithin the lamp holder.

Preferably, part of the wall of the receiving cavity is arc-shaped andreflective.

The housing of the display body comprises a front housing and a rearhousing, with a gap fainted between the bottoms of the two housings, andthe lighting device being attached within the gap.

The present invention is conducive to mounting the lighting device atthe bottom of the display with the light downwards illuminating thewhole keyboard area of the medical diagnostic apparatus such that thestructure is tight without occupying extra space, thereby noinconvenience occurs during doctors' operation. Additionally, since thewhole lighting device may be mounted within the display in a modularizedmanner and the control switch employs a resilient fastener forconnection, it is convenient for installation, disassembly, renewal andmaintenance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of the display with a lighting device mountedon a medical diagnostic apparatus according to the embodiment of thepresent invention.

FIG. 2 is a bottom view of the display with a lighting device accordingto the embodiment of the present invention.

FIG. 3 is a sectional view taken along the line A-A in FIG. 2.

FIG. 4 is a wiring diagram of the control switch of the lighting deviceaccording to the embodiment of the present invention.

FIG. 5 is an exploded perspective view of the lighting device accordingto the embodiment of the present invention.

FIG. 6 is schematic view of the lighting device before being mounted inthe front housing of the display body according to the embodiment of thepresent invention.

DETAILED DESCRIPTION OF THE INVENTION

See FIGS. 1-6. The display with a lighting device according to theembodiment of the present invention comprises a display body 1 and alighting device 2. The display body 1 comprises a housing and a powersupply panel. The housing is constituted by a front housing 11 and arear housing 12, with a gap 13 formed between the bottoms of the fronthousing 11 and the rear housing 12. The lighting device 2 is embeddedinto and fixed in the gap 13. The power supply panel is mounted to thefront housing 11.

The lighting device 2 comprises a frame 20, a lighting circuit board 21,a light-transparent lamp shade 22, a pair of tubes 23 and a controlswitch 24. The frame is made of plastic and has a lower surface 200facing the lamp shade 22 and an upper surface 201 facing the lightingcircuit board 21. The lower surface 200 is provided with a receivingcavity 202 and a switch fixing hole 203 on one side of the receivingcavity 202. Part of the wall 204 of the receiving cavity 202 isarc-shaped and reflective. Two lamp shade fixing poles 205 are disposedat the bottom of the receiving cavity 202. The upper surface 201 isprovided with four first through holes 206 arranged in line andcommunicating with the receiving cavity 202 and three circuit boardfixing poles 207 arranged as a triangle The lighting circuit board 21 isprovided with four lamp holders 210 respectively aligned with the fourfirst through holes 206 on the side facing the frame 20. The lamp holder22 is made of transparent plastic, and is provided with countersunkscrew bores 220 at the position corresponding to the lamp shade fixingpoles 205 of the frame and a second through hole 221 at the positioncorresponding to the switch fixing hole 203 of the frame. In the middleof the tube 23 lies in a cylindrical glass tungsten filament tube, bothends of which are metal layers snapped tightly to the lamp holder 210 ofthe lighting circuit board to form a circuit. The control switch 24 isused to control the connection and disconnection of the circuits of thetwo tubes, having a resilient fastener 240 arranged to snap tightly forinstallation, a first switch link 241 connected to the lighting circuitboard at the end thereof and a second switch link 242 connected to thepower supply panel 21 of the display body. In addition, the frame 20 isfurther provided with three bolt-mounting positions 208 and two hangingears 209.

The lighting device is installed successively as follows. First, thecircuit board 21 is put on the upper surface 201 of the frame, with thefour lamp holders 210 thereof respectively passing through the fourfirst through holes 206 of the frame and extending into the receivingcavity 202 of the frame. Then, three screws 25 pass through the throughholes 211 of the lighting circuit board and are locked into the threecircuit board fixing poles 207 of the frame, thereby fixing the circuitboard 21 on the upper surface 201 of the frame. The two tubes 23 arepressed respectively into the four lamp holders 210, with one of them 23being supported by two lamp holders 210. The control switch 24 ispressed into the switch fixing hole 203 of the frame and snapped tightlyvia the resilient fastener 240 of the control switch 24. The transparentlamp shade 22 is put on for covering and fixed to the lower surface 200of the frame using two countersunk bolts 26 passing through thecountersunk screw bores 220 of the lamp shade and then being locked intothe two lamp shade fixing poles 205 of the frame, thereby the lightingdevice 2 having the enclosed receiving cavity 202 is assembled.

When mounting the lighting device 2 on the display body 1, the lightingdevice 2 is fixed to the front housing 11 of the display body usingthree bolts 27, and the two hanging ears 209 of the frame hang againstthe rib 14 at the inner side of the bottom of the front housing, therebythe lighting device 2 being fixed reliably to the front housing 11.

The pin of the first switch link 241 of the control switch 24 is pluggedinto the socket 212 of the lighting circuit board 21, and the firstswitch link is connected respectively to the two lamp holders of each ofthe tubes to form a positive electrode and a zero electrode such thatlighting voltage is supplied for the tubes via the lighting circuitboard. The pin of the second switch link 242 is plugged into the powersupply panel of the front housing 11 such that lighting voltage issupplied for the lighting circuit board via the power supply panel.

When in use, the display with a lighting device according to the presentembodiment is mounted on the medical diagnostic apparatus 3 (e.g. abogie type-B ultrasonic). When the tube of the lighting device is lit,part of the light emitted from the tube penetrates directly out of thetransparent lamp shade 22, and remaining part penetrates out of the lampshade 22 after being reflected by the arc-shaped reflective wall 204 ofthe frame, thereby illuminating the whole keyboard area 4 of the medicaldiagnostic apparatus.

The present invention is not limited to above embodiments. On thecontrary, variations of the present invention are allowed on the basisof the aforementioned. For example, the light source body is not limitedto an elongate tube, and other spot light sources such as LED may alsobe employed. In addition, the transparent lamp shade 22 is not a must,which may be omitted to have the light source body contact directly withthe outside. In such a case, since the base is configured to have areceiving cavity 202, the light source body disposed in theconcave-receiving cavity 202 may also be protected against damage.Besides, the lighting circuit board 21 may also be disposed on one sideof the frame 20 based on requirement, instead of being disposed rightabove the frame 20 as described hereinbefore.

In the present embodiment, the lighting device is mounted at the bottomof the display body, with the light downwards illuminating the wholekeyboard area of the medical diagnostic apparatus such that thestructure is tight without occupying extra space, thereby noinconvenience occurs during doctors' operation. As the lighting deviceis provided with the switch, doctors may readily turn on or off thelight if necessary. Also, it is convenient for renewal and maintenanceof the tube, as once the service life expires and the tube fails towork, the two countersunk bolts fixing the transparent lamp shade can beloosened and the transparent lamp shade can be removed.

The above contents are details of the present invention with referenceto the preferred embodiments and shall not be construed as limitation tothe embodiments of the present invention. Those skilled in the art maymake simple derivations or replacement under the concept of the presentinvention, which shall be deemed as being within the scope of thepresent invention.

1. A medical diagnostic apparatus, comprising: a display to displaymedical diagnostic information, the display comprising a display housinghaving a top edge at an upper end of the display, a bottom edge at alower end of the display, and a front surface that extends from the topedge to the bottom edge such that the bottom edge extends rearward fromthe front surface, and wherein the display housing comprises a receivingcavity at a bottom region thereof that is positioned rearward of thefront surface of the display housing; an input device located below thebottom edge of the display housing; and a lighting device disposedwithin the receiving cavity of the display housing and mounted flushwith the bottom edge of the display housing to directly illuminate theinput device, wherein the lighting device is oriented relative to thedisplay housing so as to direct light downwardly away from the displayand toward the input device.
 2. The medical diagnostic apparatus ofclaim 1, wherein the lighting device comprises at least one tungstenfilament tube or light emitting diode (LED).
 3. The medical diagnosticapparatus of claim 1, wherein the lighting device is removably attachedto the receiving cavity of the display housing.
 4. The medicaldiagnostic apparatus of claim 1, wherein the lighting device includes atransparent lamp shade that is flush with the bottom edge of the displayhousing.
 5. The medical diagnostic apparatus of claim 1, wherein thereceiving cavity includes an arc-shaped reflective wall positionedbehind the lighting device.
 6. The medical diagnostic apparatus of claim1, wherein the lighting device is electrically connected to a powersupply panel within the display.
 7. The medical diagnostic claim 6,wherein the lighting device further comprises a lighting circuit boardand a control switch, the lighting circuit board connecting the lightingdevice with the power supply panel via the control switch, the controlswitch having a first switch link connected to the lighting circuitboard and a second switch link connected to the power supply panel. 8.The medical diagnostic apparatus of claim 1, wherein the input devicecomprises a keyboard.
 9. The medical diagnostic apparatus of claim 1,wherein the display housing comprises a front housing and a rearhousing, with a gap formed between the bottom edges of the two housings,the lighting device being disposed within the gap.
 10. The medicaldiagnostic apparatus of claim 1, wherein the lighting device comprisesat least one tungsten filament tube or light emitting diode (LED) thatare positioned such that a portion of light that is emitted therefromtravels to the input device without being reflected.
 11. The medicaldiagnostic apparatus of claim 10, wherein the lighting device comprisesa light-transparent lampshade, and wherein said portion of lightpenetrates directly out of the lampshade.
 12. The medical diagnosticapparatus of claim 10, wherein the lighting device comprises areflective wall, and wherein another portion of light that is emittedfrom said at least one tungsten filament tube or light emitting diode(LED) is reflected from the reflective wall before traveling to theinput device.
 13. The medical diagnostic apparatus of claim 10, whereinthe lighting device is configured to direct light downwardly away fromthe display and toward the input device without the light passingthrough the front surface of the display housing.